Improvement in automatic wagon-brakes



L L. TRAVIS. Automatic Wagon-Brake.

Patented April 30, I878.

.ZbrevaZ. 73160? is.

INVENTOR.

' ATTORNEY.

} WITNESSES: M (Z UNITED STATES PATENT OFFICE.

LOREN L. TRAVIS, OE LEMON, PENNSYLVANIA.

IMPROVEMENT IN AUTOMATIC WAGON-BRAKES.

Specification forming part of Letters Patent No. 203,093, dated April30, 1878 application filed November 30, 1877.

To all whom it may concern:

Be it known that I, LOREN L. TRAVIS, of'

Lemon, in the county of Wyoming and State of Pennsylvania, have inventedcertain new and useful Improvements in Automatic Wagon-Brakes; and I dohereby declare that the following is afull, clear, and exact descriptionof my invention, that will enable others skilled n the neck-yoke againstthe lever on the under side of the tongue, to whose rear end is attacheda lever passing through a slot in the tongue. Pivoted'therein and to theupper end of said lever there is a plurality of levers, connected withan evener, the ends of which are each connected with the pivoted levers,to which the brake-blocks are attached.

The object of my invention is to furnish a brake which shall pressevenly on both wheels, although the brake-block of one mayhave becomemuch thinner by wearing than that of the other.

In the drawings, Figure l is a plan view of the lower part of a wagon,showing my invention. Fig. 2 is a detailed sectional view of myinvention, showing the lever beneath the tongue, and the manner in whichit is connectedwith a lever passing through a slot in the tongue, andthus connecting with the plurality of levers extending over the foreaxle and reach. Fig. 3 is a side view of the brake-blocks orfriction-shoes.

A is the tongue. B is the lever beneath the tongue. 0 is the lever whichpasses through a slot in the tongue. D is the series of levers which areconnected with the evener E. F is a cross-bar, connecting the front endof the rear hounds, to. the ends of which are pivoted the levers G G,and to the extremities of these two levers are connected thefriction-shoes H H. II are elastic springs, fastened at one end to therear bolster K, and at the other end to the levers H H.

The whiffletree a operates on the pivot 11, which is rigidly attached tothe lever B. The evener E is connected with the levers G G by the shortlevers c c.

It is now evident that, when either of the friction-shoes H or H becomesmore worn than the other, the pressure upon the wheels is made uniformand equal, in consequence of the elastic springs I 1 operating with theevener E upon the levers G G.

Having now fully described my invention, Iclaim and desire to secure byLetters Pat'- ent- The elastic springs I I, fastened at one end to therear bolster K, and at the other end, each respectively, to the levers GG, in combination with the short connecting-levers c c, the evener E,the series of levers I), and the levers G and B, substantially as shownand described, and for the purposes herein setforth.

In testimony that I claim the foregoing I have hereunto set my hand this6th day of November, 1877.

LOREN L. TRAVIS.

Witnesses H. A. MITCHELL, GILBERT TRAVIS.

